that's according to police in new mexico and vermont. the suspects, a convicted felon and his 23-year-old nephew, were allegedly hired by an inmate in new mexico infatuated with the pop music star. anderson? >> isha, thanks. >>> much more ahead, including a mother's grief and outrage. her young son and daughter were viciously stabbed to death by their own father. he confessed, but now he's free. coming up, his ex-wife's fight to make sure no other family suffers what she has endured. >>> her death shocked the world, now british police are releasing new information about the nurse who apparently took her own life after transferring a prank call to the ward treating catherine, the duchess of cambridge. what they're saying about the circumstances surrounding her death. >>> crime and punishment. a mother whose young children were viciously stabbed to death is reeling tonight. their killer is back on the streets. he was released from a mental health facility just yesterday. the case is as controversial as it is horrifying. 5-year-old olivier